In a brilliant piece disecting Apple commentary on compeitors, Jean-Louis Gasse gets at some of the reasons a PR firm exits.

… PR firms have long memories and sharp knives.

The approach may seem cynical, but it’s convenient and effective. The PR firm maintains a net (and that’s the right word) of relationships with the media and their pilot fish. If it has the talent of a Waggener Edstrom, it provides sound strategic advice, position papers, talking points, and freeze-dried one-liners.

Furthermore, a PR firm has the power of providing access. I once asked a journalist friend how his respected newspaper could have allowed one of its writers to publish a fellacious piece that described, in dulcet tones, a worldwide Microsoft R&D tour by the company’s missus dominicus. “Access, Jean-Louis, access. That’s the price you pay to get the next Ballmer interview…”

Today, look at the truly admirable job Frank Shaw does for Microsoft. Always on Twitter, frequently writing learned and assertive pieces for the company’s official blog. By the way, where’s Apple’s blog?

And he is right, Frank is doing a great job at Microsoft.